【摘要】 在高压直流输电系统可靠性评估中,根据设备功能对高压直流输电系统的设备进行划分的方法虽然简单,但分类过于粗糙,对设备的失效模式进行了过多的简化。根据直流系统设备的功能和失效模式对直流系统子系统进行重新划分,在此基础上,提出了以系统状态转移抽样模拟法为基础并结合解析法,对高压直流输电系统进行可靠性评估的混合法。该方法先用解析法将含有备用相关性的设备简化为等效子系统,然后再对简化后的整个直流系统可靠性模型利用模拟法得到系统的可靠性指标。仿真计算了伊尔河直流系统的可靠性指标,验证了该算法的正确性和有效性。更多还原

【Abstract】 In the reliability evaluation of HVDC, although the method that classifies the HVDC devices according to device function is simple, but such a classification is too rough and the failure mode of devices are simplified too much. The HVDC subsystems are reclassified according to the function of HVDC devices as well as their failure modes, on this basis a hybrid reliability evaluation method for HVDC is proposed in which the system state transition sampling simulation method is taken as the foundation and analytical method is combined with. At first the proposed method simplifies the devices possessing backup dependency as equivalent subsystems by analytical method, then the reliability indices for the reliability model of whole simplified HVDC system are obtained by simulation method. By means of simulation, the reliability indices of Eel River HVDC system is calculated, thereby the correctness and effectiveness of the proposed method is validated.更多还原